Where have all the transistor portables gone?

[Thyratron]

Anyone notice how much harder these seem to come by now? What used to be a common find in any thrift store now seems to take a lot more looking to find "in the wild." And as for the currently produced ones, well, there just aren't too many any more! Radio Shack apparently carries a couple, and Sony still seems to make one, which I saw in a Sears not too long ago. Other than that, they seem to have died out. It's too bad, really, but at least I have a few old ones to enjoy; nothing else really gives "that sound."